Structure and phase transformations in copper-alloyed rapidly melt-quenched Ni50Ti32Hf18-based alloys with high-temperature shape memory effect

被引：7

作者：

Pushin, A. V. ^{[1
]}

Pushin, V. G. ^{[1
,2
]}

Kuranova, N. N. ^{[1
]}

Kourov, N. I. ^{[1
]}

Kuntsevich, T. E. ^{[1
]}

Makarov, V. V. ^{[1
]}

Uksusnikov, A. N. ^{[1
]}

机构：

[1] Russian Acad Sci, Mikheev Inst Met Phys, Ural Branch, Ul S Kovalevskoi 18, Ekaterinburg 620990, Russia

[2] Ural Fed Univ, Ul Mira 19, Ekaterinburg 620002, Russia

来源：

PHYSICS OF METALS AND METALLOGRAPHY | 2017年 / 118卷 / 10期

基金：

俄罗斯科学基金会;

关键词：

rapid quenching from the melt; microstructure; amorphous state; thermoelastic martensitic transformation; alloying with copper and hafnium; THERMOELASTIC MARTENSITIC TRANSFORMATIONS; TINI-TICU; MECHANICAL-PROPERTIES; MICROSTRUCTURE;

D O I：

10.1134/S0031918X17100118

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Methods of transmission and scanning electron microscopy, chemical microanalysis, electron diffraction, and X-ray diffraction have been used to carry out the comparative study of the structure and chemical and phase composition of thin ribbons of four quasi-binary alloys (Ni50Ti32Hf18, Ni45Ti32Hf18Cu5, Ni35Ti32Hf18Cu15, and Ni25Ti32Hf18Cu25) obtained in the amorphous state by rapid quenching from the melt by jet spinning. The critical temperatures of the devitrification and B2 a <-> B19' martensitic transformation of the alloys have been determined based on the data of temperature dependences of the electrical resistivity. The specific features of the formation of the ultrafine-grained structure upon the devitrification and of the phase transformations have been studied depending on the heat-treatment regimes and chemical composition of the alloys (concentration of copper atoms).

引用

页码：997 / 1005

页数：9

共 35 条

[1] The effect of hafnium content on the transformation temperatures of Ni49TiS1-xHfx shape memory alloys [J].